Guitar headstock



FIG. 1 is an isometric view of a guitar headstock embodying our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a side elevational view taken from the top of FIG. 2; and

FIG. 5 is a side elevational view taken from the left side of FIG. 2. 

The ornamental design for a guitar headstock, substantially as shown. 